Home / 830,421.07-1,145,981.08-448,447.85

Finding the Fourth Proportional to 830,421.07, 1,145,981.08 and 448,447.85

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Solution

The fourth proportional to 830,421.07, 1,145,981.08 and 448,447.85 is: 618,858.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,421.07 : 1,145,981.08 = 448,447.85 : x
  2. Step 2: Convert to fraction form
    830,421.07/1,145,981.08 = 448,447.85/x
  3. Step 3: Cross multiply
    830,421.07x = 1,145,981.08 × 448,447.85
  4. Step 4: Simplify right side
    830,421.07x = 513,912,751,466.68
  5. Step 5: Solve for x
    x = 513,912,751,466.68/830,421.07
  6. Step 6: Final answer
    x = 618,858.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.